Colors are nice, just don't go crazy. The logo will be primarily used on business cards and polo shirts (usually black or dark blue) - so keep printing costs in mind when choosing colors. If there are two color schemes - one for website and printing use and one for shirts - that would be ok.
Simple is good. It doesn't need to be busy to make it look like you put a lot of work into it - we appreciate good design, we just can't do it ourselves.
Maybe all text, maybe a nice clean graphic, you tell me. You don't need to spell out our whole name but it should at least have the STG part.
None of that futuristic techy blocky font stuff please.
Prefer some kind of vector or line drawing, something that can be resized - EPS and SVG are good. (Forgot this in the original brief, sorry.)